18 Output PCIe G2/QPI Differential Buffer With 2:1 Input MUX

The 9EX21801 provides 18 output clocks for PCIe Gen2 (100MHz) or QPI (133MHz) applications. The 9EX21801 has 4 selectable SMBus addresses, and dedicated CKPWRGD/PD# and VDDA pins for easy board design. A differential CPU clock from a CK410B+ main clock generator, such as the 932S421, drives the 9EX21801. In fanout mode, the 9EX21801 provides outputs up to 400MHz.

Features

  • DIF output cycle-to-cycle jitter < 50ps
  • DIF output-to-output skew < 150 ps
  • PCIe Gen2 compliant phase noise
  • QPI 133MHz compliant phase noise
  • Supports output clock frequencies up to 400 MHz
  • 4 Selectable SMBus addresses
  • SMBus address is independent of PLL operating mode
  • Dedicated CKPWRGD/PD# and VDDA pins ease board design
  • Available in industrial temperature range (-40°C to +85°C)

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9EX21801AKILF Last Time Buy NLG72P1 VFQFPN 72 I Yes Tray Availability
9EX21801AKILFT Last Time Buy NLG72P1 VFQFPN 72 I Yes Reel Availability
9EX21801AKLF Last Time Buy NLG72P1 VFQFPN 72 C Yes Tray Availability
9EX21801AKLFT Last Time Buy NLG72P1 VFQFPN 72 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9EX21801A Datasheet Datasheet PDF 149 KB Mar 21, 2012
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 10, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PCNs & PDNs
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB Nov 29, 2017
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB Aug 24, 2017
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB Dec 19, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 21, 2015
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 20, 2015
PCN# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB Feb 15, 2014
PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB Dec 2, 2013
PCN# : A1308-01 Add ASEK as Alternate Assembly for VFQFPN-72 Product Change Notice PDF 103 KB Aug 17, 2013
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 28, 2013
PCN# : K1002-01 UPDATED DATASHEET TO CORRECT PIN62 DESCRIPTION Product Change Notice PDF 55 KB Mar 3, 2010
Other
The IDT Consumer Products Advantage Overview PDF 4.01 MB Jun 30, 2017
IDT PCI Express Solutions Overview 日本語, 简体中文 Overview PDF 768 KB Apr 19, 2017
The IDT Automotive Advantage Overview PDF 3.55 MB May 26, 2017
The IDT Communications Products Advantage Overview PDF 2.54 MB Feb 13, 2017
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016

Software & Tools

Title Other Languages Type Format File Size Date
9EX21801AKLF IBIS Model Model - IBIS ZIP 9 KB Sep 29, 2008